I have allergies and I bought this product to help clean the air in my bedroom at night so I can sleep better. It works really well. It is easy to set up (you just need to remove a couple pieces of plastic), then you can just plug it in and it works great. There are four power settings you can use, and then there is also a timer setting which is convenient if you don't want to leave it running all day. The buttons are easy to push and change between options. The instruction manual says the filter should last about 3,000 hours.